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August 21st, 2013, 09:41 PM  #1 
Member Joined: Aug 2013 Posts: 69 Thanks: 0  Algebra Check UP! WHY am I OFF by sqrt. 2
1/?((1((x1)/(x+1))^2 ) )*((1+x)(1x))/(1+x)^2 I end up getting = 2/?2x(1+x) ...the answer says it should 1/?x(1+x) ...Yes I did use the variable 2. And the answer was the same as the book... I've tried, but am blocked. Zen. 
August 22nd, 2013, 12:33 AM  #2 
Senior Member Joined: Mar 2012 From: Belgium Posts: 654 Thanks: 11  Re: Algebra Check UP! WHY am I OFF by sqrt. 2 
August 22nd, 2013, 10:34 PM  #3 
Newbie Joined: May 2013 Posts: 16 Thanks: 0  Re: Algebra Check UP! WHY am I OFF by sqrt. 2
Solution: 1/(?(1((x1)²/(x+1)²))*((1+x)(1x))/(1+x)² =2x/((1+x)²?((x+1)²(x1)²/(x+1)²) =2x/((x+1)?((x+1)²(x1)²)) =2x/(x+1)?(4x) =x/(x+1)?x =?x/(x+1) this is the right answer. 
August 24th, 2013, 01:16 PM  #4 
Member Joined: Aug 2013 Posts: 69 Thanks: 0  Re: Algebra Check UP! WHY am I OFF by sqrt. 2
Okay, I should go to sleep more , I have to brush up on my easy arithmetic, x^2 + 2x + 1 (not x^2 + x + 1) Thanks. 
August 24th, 2013, 01:20 PM  #5 
Member Joined: Aug 2013 Posts: 59 Thanks: 0 
Don't be lazy to learn the benefit of LaTeX. Thanks to gelatine1, we could move on to solve such problem. 

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